The Enterprise and a Klingon ship are trapped in space-time warp where only their cooperation will allow them to escape.
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Although the character of Klingon Commander Kor was most frequently played by John Colicos (including in an episode of Star Trek: The Original Series), the role was voiced by James Doohan in animated form. See more
Spock states the sensors are not reliable. Then they see a Klingon ship that fires on Enterprise. Enterprise returns fire and the Klingon vanishes. Spock says that the Klingon's shields clearly deflected the phasers, nor did it cloak. He then says the sensors are still not working properly. If the sensors weren't working properly Spock would have no way of knowing any of this. See more
Captain's Log: Supplemental, First Officer Spock recording. We appear to be in an alternate universe. Position undetermined. Captain Kirk has been transported from the ship by an unknown power. His present location, also, is undetermined.